diff --git a/lcms2.spec b/lcms2.spec
index 78f49ab..88da17f 100644
--- a/lcms2.spec
+++ b/lcms2.spec
@@ -2,7 +2,10 @@ Name:           lcms2
 Version:        2.15
 Release:        %autorelease
 Summary:        Color Management Engine
-License:        MIT
+# part of src/cmssm.c is softsurf (no SPDX yet) see https://gitlab.com/fedora/legal/fedora-license-data/-/issues/469
+# utils/samples/mkcmy.c is libtiff - but it is not used
+# plugins/threaded/src/ is GPL-3.0-or-later
+License:        MIT AND GPL-3.0-or-later
 URL:            http://www.littlecms.com/
 Source0:        http://www.littlecms.com/lcms2-%{version}.tar.gz